History of the shhh-ing celebration at the finish line

Been going on for a long time in sports but I don't know when it started in track. I saw a high school kid do it in about 2001. I wasn't a fan of that back then either.

Here is Jordan shushing some hecklers apparently.

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OK, so what's a better gesture? I've thought of a few that are more indicative of good manners: the royal wave as you cross the line, turn and do a tiny courtesy or bow, bring a chair to the finish line and sit, relax and have a scone while your opponents finish (only works for longer races).